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   <div id="projectname">DM-CtrlH7-BF-DevProgram<span id="projectnumber">&#160;beta 0.1</span>
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  <div class="headertitle"><div class="title">bsp_iic.h</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="preprocessor">#include &quot;i2c.h&quot;</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="preprocessor">#include &quot;stdint.h&quot;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="preprocessor">#define IIC_DEVICE_CNT 2   </span><span class="comment">// C板引出了I2C2和I2C3</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="preprocessor">#define MX_IIC_SLAVE_CNT 8 </span><span class="comment">// 最大从机数目,根据需要修改</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">/* i2c 工作模式枚举 */</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="keyword">typedef</span> <span class="keyword">enum</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span>{</div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span>    <span class="comment">// 基本工作模式</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span>    IIC_BLOCK_MODE = 0, <span class="comment">// 阻塞模式</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span>    IIC_IT_MODE,        <span class="comment">// 中断模式</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span>    IIC_DMA_MODE,       <span class="comment">// DMA模式</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span>} IIC_Work_Mode_e;</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">/* I2C MEM工作模式枚举,这两种方法都是阻塞 */</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="keyword">typedef</span> <span class="keyword">enum</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span>{</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span>    IIC_READ_MEM = 0, <span class="comment">// 读取从机内部的寄存器or内存</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span>    IIC_WRITE_MEM,    <span class="comment">// 写入从机内部的寄存器or内存</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span>} IIC_Mem_Mode_e;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment">/* Seq传输工作模式枚举,注意HOLD_ON要在IT或DMA下使用 */</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment">// 必须以IIC_RELEASE为最后一次传输,否则会导致总线占有权无法释放</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="keyword">typedef</span> <span class="keyword">enum</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span>{</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span>    IIC_SEQ_RELEASE,    <span class="comment">// 完成传输后释放总线占有权,这是默认的传输方式</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span>    IIC_SEQ_HOLDON = 0, <span class="comment">// 保持总线占有权不释放,只支持IT和DMA模式</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span>} IIC_Seq_Mode_e;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment">/* i2c实例 */</span></div>
<div class="foldopen" id="foldopen00033" data-start="{" data-end="};">
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"><a class="line" href="structiic__temp__s.html">   33</a></span><span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code hl_struct" href="structiic__temp__s.html">iic_temp_s</a></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span>{</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span>    I2C_HandleTypeDef *handle; <span class="comment">// i2c handle</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span>    uint8_t dev_address;       <span class="comment">// 暂时只支持7位地址(还有一位是读写位)</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span>    IIC_Work_Mode_e work_mode;             <span class="comment">// 工作模式</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span>    uint8_t *rx_buffer;                    <span class="comment">// 接收缓冲区指针</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span>    uint8_t rx_len;                        <span class="comment">// 接收长度</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span>    void (*callback)(<span class="keyword">struct </span><a class="code hl_struct" href="structiic__temp__s.html">iic_temp_s</a> *); <span class="comment">// 接收完成后的回调函数</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span> </div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span>    <span class="keywordtype">void</span> *id; <span class="comment">// 用于标识i2c instance</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span>} IICInstance;</div>
</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment">/* I2C 初始化结构体配置 */</span></div>
<div class="foldopen" id="foldopen00047" data-start="{" data-end="};">
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="struct_i_i_c___init___config__s.html">   47</a></span><span class="keyword">typedef</span> <span class="keyword">struct</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span>{</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span>    I2C_HandleTypeDef *handle;       <span class="comment">// i2c handle</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span>    uint8_t dev_address;             <span class="comment">// 暂时只支持7位地址(还有一位是读写位),注意不需要左移</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span>    IIC_Work_Mode_e work_mode;       <span class="comment">// 工作模式</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span>    void (*callback)(IICInstance *); <span class="comment">// 接收完成后的回调函数</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span>    <span class="keywordtype">void</span> *id;                        <span class="comment">// 用于标识i2c instance</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span>} <a class="code hl_struct" href="struct_i_i_c___init___config__s.html">IIC_Init_Config_s</a>;</div>
</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>IICInstance *IICRegister(<a class="code hl_struct" href="struct_i_i_c___init___config__s.html">IIC_Init_Config_s</a> *conf);</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="keywordtype">void</span> IICSetMode(IICInstance *iic, IIC_Work_Mode_e mode);</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span><span class="keywordtype">void</span> IICTransmit(IICInstance *iic, uint8_t *data, uint16_t size, IIC_Seq_Mode_e mode);</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="keywordtype">void</span> IICReceive(IICInstance *iic, uint8_t *data, uint16_t size, IIC_Seq_Mode_e mode);</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="keywordtype">void</span> IICAccessMem(IICInstance *iic, uint16_t mem_addr, uint8_t *data, uint16_t size, IIC_Mem_Mode_e mode, uint8_t mem8bit_flag);</div>
<div class="ttc" id="astruct_i_i_c___init___config__s_html"><div class="ttname"><a href="struct_i_i_c___init___config__s.html">IIC_Init_Config_s</a></div><div class="ttdef"><b>Definition</b> bsp_iic.h:48</div></div>
<div class="ttc" id="astructiic__temp__s_html"><div class="ttname"><a href="structiic__temp__s.html">iic_temp_s</a></div><div class="ttdef"><b>Definition</b> bsp_iic.h:34</div></div>
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